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Low voltage active power filter（APF module）
The active power filter (APF module) connects to the grid system in a parallel way. By detecting in real time the harmonic and reactive component of the load, it injects the current with the size the same as but the direction opposite to that of the harmonic and the reactive component into the grid system to realize the functions of harmonic removal and dynamic reactive power compensation. It can compensate any of the second-fiftieth harmonics. Its response time is less than 5 ms. The harmonic compensation efficiency can be more than 90% within the capacity range, and the harmonic and reactive power can be compensated at the same time.
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